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Fair Value Measurements (Details)
6 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2013
Level 3
Jun. 30, 2013
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Future Production Bonus, Rolling Production Average 60 days    
Discount Rate   8.00% 8.00%